java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:16,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:16,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:16,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:16,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:16,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:16,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:16,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:16,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:16,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:16,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:16,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:16,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:16,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:16,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:16,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:16,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:16,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:16,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:16,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:16,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:16,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:16,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:16,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:16,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:16,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:16,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:16,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:16,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:16,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:16,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:16,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:16,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:16,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:16,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:16,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:16,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:16,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:16,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:16,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:16,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:16,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:16,142 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:16,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:16,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:16,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:16,147 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:16,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:16,147 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:16,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:16,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:16,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:16,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:16,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:16,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:16,150 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:16,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:16,150 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:16,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:16,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:16,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:16,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:16,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:16,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:16,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:16,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:16,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:16,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:16,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:16,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:16,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:16,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:16,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:16,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:16,464 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:16,465 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:16,465 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product32.cil.c [2019-10-13 23:04:16,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ac56873/a22c7d1989d34934a4f7882b8ac94eaf/FLAG92880117a [2019-10-13 23:04:17,238 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:17,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product32.cil.c [2019-10-13 23:04:17,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ac56873/a22c7d1989d34934a4f7882b8ac94eaf/FLAG92880117a [2019-10-13 23:04:17,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ac56873/a22c7d1989d34934a4f7882b8ac94eaf [2019-10-13 23:04:17,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:17,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:17,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:17,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:17,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:17,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:17" (1/1) ... [2019-10-13 23:04:17,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690905fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:17, skipping insertion in model container [2019-10-13 23:04:17,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:17" (1/1) ... [2019-10-13 23:04:17,433 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:17,517 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:18,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:18,297 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:18,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:18,512 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:18,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18 WrapperNode [2019-10-13 23:04:18,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:18,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:18,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:18,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:18,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:18,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:18,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:18,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:18,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:18,842 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:18,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:18,843 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:18,843 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:18,861 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:18,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:18,862 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:18,862 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:04:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:18,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:18,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:18,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:18,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:18,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:18,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:18,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:18,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:18,888 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:18,889 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:18,889 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:04:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:23,941 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:23,941 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:23,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:23 BoogieIcfgContainer [2019-10-13 23:04:23,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:23,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:23,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:23,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:23,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:17" (1/3) ... [2019-10-13 23:04:23,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d04f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:23, skipping insertion in model container [2019-10-13 23:04:23,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (2/3) ... [2019-10-13 23:04:23,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d04f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:23, skipping insertion in model container [2019-10-13 23:04:23,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:23" (3/3) ... [2019-10-13 23:04:23,951 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2019-10-13 23:04:23,961 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:23,970 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:23,982 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:24,014 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:24,014 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:24,014 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:24,014 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:24,014 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:24,014 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:24,014 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:24,015 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states. [2019-10-13 23:04:24,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:04:24,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:24,064 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:24,066 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:24,072 INFO L82 PathProgramCache]: Analyzing trace with hash 716596662, now seen corresponding path program 1 times [2019-10-13 23:04:24,082 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:24,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123693252] [2019-10-13 23:04:24,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:24,083 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:24,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:24,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123693252] [2019-10-13 23:04:24,663 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:24,664 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:04:24,664 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58454193] [2019-10-13 23:04:24,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:04:24,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:24,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:04:24,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:24,689 INFO L87 Difference]: Start difference. First operand 616 states. Second operand 2 states. [2019-10-13 23:04:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:24,795 INFO L93 Difference]: Finished difference Result 513 states and 755 transitions. [2019-10-13 23:04:24,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:04:24,798 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 23:04:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:24,850 INFO L225 Difference]: With dead ends: 513 [2019-10-13 23:04:24,850 INFO L226 Difference]: Without dead ends: 479 [2019-10-13 23:04:24,857 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2019-10-13 23:04:25,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2019-10-13 23:04:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2019-10-13 23:04:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 704 transitions. [2019-10-13 23:04:25,026 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 704 transitions. Word has length 74 [2019-10-13 23:04:25,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:25,029 INFO L462 AbstractCegarLoop]: Abstraction has 479 states and 704 transitions. [2019-10-13 23:04:25,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:04:25,030 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 704 transitions. [2019-10-13 23:04:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 23:04:25,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:25,043 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:25,043 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:25,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:25,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1077325897, now seen corresponding path program 1 times [2019-10-13 23:04:25,045 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:25,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594654301] [2019-10-13 23:04:25,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:25,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:25,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:25,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594654301] [2019-10-13 23:04:25,527 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:25,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:04:25,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812610280] [2019-10-13 23:04:25,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:04:25,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:25,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:04:25,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:25,538 INFO L87 Difference]: Start difference. First operand 479 states and 704 transitions. Second operand 9 states. [2019-10-13 23:04:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:31,757 INFO L93 Difference]: Finished difference Result 1320 states and 1980 transitions. [2019-10-13 23:04:31,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:04:31,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2019-10-13 23:04:31,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:31,771 INFO L225 Difference]: With dead ends: 1320 [2019-10-13 23:04:31,772 INFO L226 Difference]: Without dead ends: 883 [2019-10-13 23:04:31,781 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:04:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-10-13 23:04:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 852. [2019-10-13 23:04:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-10-13 23:04:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1237 transitions. [2019-10-13 23:04:31,842 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1237 transitions. Word has length 75 [2019-10-13 23:04:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:31,843 INFO L462 AbstractCegarLoop]: Abstraction has 852 states and 1237 transitions. [2019-10-13 23:04:31,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:04:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1237 transitions. [2019-10-13 23:04:31,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-13 23:04:31,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:31,845 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:31,845 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:31,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:31,846 INFO L82 PathProgramCache]: Analyzing trace with hash -983155146, now seen corresponding path program 1 times [2019-10-13 23:04:31,846 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:31,846 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630274386] [2019-10-13 23:04:31,846 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:31,847 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:31,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:32,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630274386] [2019-10-13 23:04:32,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:32,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:32,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534376381] [2019-10-13 23:04:32,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:32,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:32,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:32,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:32,031 INFO L87 Difference]: Start difference. First operand 852 states and 1237 transitions. Second operand 5 states. [2019-10-13 23:04:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:34,012 INFO L93 Difference]: Finished difference Result 2542 states and 3780 transitions. [2019-10-13 23:04:34,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:34,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2019-10-13 23:04:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:34,033 INFO L225 Difference]: With dead ends: 2542 [2019-10-13 23:04:34,034 INFO L226 Difference]: Without dead ends: 1733 [2019-10-13 23:04:34,039 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:04:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2019-10-13 23:04:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1637. [2019-10-13 23:04:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2019-10-13 23:04:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2421 transitions. [2019-10-13 23:04:34,160 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2421 transitions. Word has length 76 [2019-10-13 23:04:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:34,161 INFO L462 AbstractCegarLoop]: Abstraction has 1637 states and 2421 transitions. [2019-10-13 23:04:34,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:04:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2421 transitions. [2019-10-13 23:04:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 23:04:34,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:34,163 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:34,163 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:34,164 INFO L82 PathProgramCache]: Analyzing trace with hash -414612669, now seen corresponding path program 1 times [2019-10-13 23:04:34,164 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:34,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122777372] [2019-10-13 23:04:34,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:34,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:34,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:34,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122777372] [2019-10-13 23:04:34,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:34,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:34,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755210562] [2019-10-13 23:04:34,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:34,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:34,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:34,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:34,324 INFO L87 Difference]: Start difference. First operand 1637 states and 2421 transitions. Second operand 4 states. [2019-10-13 23:04:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:36,345 INFO L93 Difference]: Finished difference Result 4830 states and 7247 transitions. [2019-10-13 23:04:36,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:36,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-10-13 23:04:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:36,368 INFO L225 Difference]: With dead ends: 4830 [2019-10-13 23:04:36,368 INFO L226 Difference]: Without dead ends: 3237 [2019-10-13 23:04:36,378 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2019-10-13 23:04:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3120. [2019-10-13 23:04:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2019-10-13 23:04:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4656 transitions. [2019-10-13 23:04:36,568 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4656 transitions. Word has length 77 [2019-10-13 23:04:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:36,569 INFO L462 AbstractCegarLoop]: Abstraction has 3120 states and 4656 transitions. [2019-10-13 23:04:36,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4656 transitions. [2019-10-13 23:04:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 23:04:36,570 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:36,570 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:36,571 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:36,571 INFO L82 PathProgramCache]: Analyzing trace with hash 30338840, now seen corresponding path program 1 times [2019-10-13 23:04:36,571 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:36,572 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948495136] [2019-10-13 23:04:36,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:36,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:36,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:36,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948495136] [2019-10-13 23:04:36,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:36,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:36,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023480955] [2019-10-13 23:04:36,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:36,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:36,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:36,723 INFO L87 Difference]: Start difference. First operand 3120 states and 4656 transitions. Second operand 4 states. [2019-10-13 23:04:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:38,878 INFO L93 Difference]: Finished difference Result 9324 states and 14118 transitions. [2019-10-13 23:04:38,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:38,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-13 23:04:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:38,933 INFO L225 Difference]: With dead ends: 9324 [2019-10-13 23:04:38,934 INFO L226 Difference]: Without dead ends: 6249 [2019-10-13 23:04:38,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2019-10-13 23:04:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 6087. [2019-10-13 23:04:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6087 states. [2019-10-13 23:04:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6087 states to 6087 states and 9164 transitions. [2019-10-13 23:04:39,346 INFO L78 Accepts]: Start accepts. Automaton has 6087 states and 9164 transitions. Word has length 78 [2019-10-13 23:04:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:39,346 INFO L462 AbstractCegarLoop]: Abstraction has 6087 states and 9164 transitions. [2019-10-13 23:04:39,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6087 states and 9164 transitions. [2019-10-13 23:04:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 23:04:39,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:39,353 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:39,354 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:39,354 INFO L82 PathProgramCache]: Analyzing trace with hash 938937637, now seen corresponding path program 1 times [2019-10-13 23:04:39,354 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:39,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076679918] [2019-10-13 23:04:39,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:39,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:39,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:39,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076679918] [2019-10-13 23:04:39,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:39,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:39,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910183934] [2019-10-13 23:04:39,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:39,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:39,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:39,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:39,489 INFO L87 Difference]: Start difference. First operand 6087 states and 9164 transitions. Second operand 4 states. [2019-10-13 23:04:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:41,710 INFO L93 Difference]: Finished difference Result 18327 states and 28127 transitions. [2019-10-13 23:04:41,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:41,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-10-13 23:04:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:41,812 INFO L225 Difference]: With dead ends: 18327 [2019-10-13 23:04:41,812 INFO L226 Difference]: Without dead ends: 12285 [2019-10-13 23:04:41,850 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12285 states. [2019-10-13 23:04:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12285 to 12034. [2019-10-13 23:04:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12034 states. [2019-10-13 23:04:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12034 states to 12034 states and 18338 transitions. [2019-10-13 23:04:42,716 INFO L78 Accepts]: Start accepts. Automaton has 12034 states and 18338 transitions. Word has length 79 [2019-10-13 23:04:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:42,717 INFO L462 AbstractCegarLoop]: Abstraction has 12034 states and 18338 transitions. [2019-10-13 23:04:42,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 12034 states and 18338 transitions. [2019-10-13 23:04:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 23:04:42,723 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:42,723 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:42,723 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:42,724 INFO L82 PathProgramCache]: Analyzing trace with hash -959266822, now seen corresponding path program 1 times [2019-10-13 23:04:42,724 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:42,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45245007] [2019-10-13 23:04:42,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:42,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:42,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:42,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45245007] [2019-10-13 23:04:42,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:42,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:42,873 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082652519] [2019-10-13 23:04:42,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:42,874 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:42,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:42,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:42,875 INFO L87 Difference]: Start difference. First operand 12034 states and 18338 transitions. Second operand 4 states. [2019-10-13 23:04:45,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:45,756 INFO L93 Difference]: Finished difference Result 36386 states and 57091 transitions. [2019-10-13 23:04:45,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:45,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-10-13 23:04:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:45,976 INFO L225 Difference]: With dead ends: 36386 [2019-10-13 23:04:45,976 INFO L226 Difference]: Without dead ends: 24385 [2019-10-13 23:04:46,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24385 states.